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Finding the Fourth Proportional to 133,679.10, 200,518.65 and 83,912.70

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Solution

The fourth proportional to 133,679.10, 200,518.65 and 83,912.70 is: 125,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,679.10 : 200,518.65 = 83,912.70 : x
  2. Step 2: Convert to fraction form
    133,679.10/200,518.65 = 83,912.70/x
  3. Step 3: Cross multiply
    133,679.10x = 200,518.65 × 83,912.70
  4. Step 4: Simplify right side
    133,679.10x = 16,826,061,321.86
  5. Step 5: Solve for x
    x = 16,826,061,321.86/133,679.10
  6. Step 6: Final answer
    x = 125,869.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.